Mixing machine



' May. 11 19 26..

J. VER MEHR mums MACHINE Filed May 12. 1923 S Sheets-Shed 1 W in I. L 9W. m

May 11-;1926. 1,583,892

. J. VER MEHR MIXING MACHINE Fil ed M55712. 1923 s Sheets-Sheet 2' mmswrm JV/Mfif' J VER MEHR MIXING MACHINE Filed May 12. 1925 3 Sheets-Sheet 3 I INVENTOP k7 ref/ 763 my/Z? 'ATTORNEU;

Patented May 11,1926;

'7 JOHN vm 1x11113301 Lennon, ENGLAND. 1

' Application n ny 12 This invention hasflreference to mixing machines Whereb various ingredients or substances may e intimately adinlxed or commingled. i

'More particularly the inventionisfcon-i cerned with machines for mixingconcrete".

orthe like although it is'to be understood that its sphere of usetulness is not to be considered as restricted uto this' specific pur pose as'apparatus according to my inven-' .7- tion maybe employed'generally Where it is desired to produce I a thorough admixture of various ingredients or substances. y

,The .pr'irnary'ob1ech0ff my invention 18 to providean improved mixing I machine 7 which will becapable of treating large quanprovideanfimproved mixing machine which 7 tities of materials .expeditiouslythe 'mix tures delivered from the uniform quality.

Further iobjects machine being of may be constructed; cheaply andfoperated eff ciently with a"'j lo,vv power thus 1 effecting considerable economy in -rujnning costs to provide for easy, accessibility to the inte-' riorgof the .rnixer'vvhereby repair'or renewal ient in operation than mixing machines of -any of'the partsjmay beefiectedexpeditiously and .generally to provide. an vim:

proved 1 {constructioniof' mixing machine which shall be more efiicient and conven as heretoforeconstructed. I 7

With the aforesaid objects in view-and such others as may hereinafter appear or are incidental thereto my invention 'in its broadest aspect'may be saidto' be embodied in -a mixing machine of the rotaryfjdrum typerwhe rein the'several ingredients to be -mixed fed thereto in alsubstantially continuous manner are caused during theirpa's sage through the mixer to be thoroughly commingl'ed in such a, manner "that the gauged proportions aremaintained throughout the mixing operation the .'mixed ingred ients being discharged intermittently from 1 the mixer asthis is rotated. or

Stated another way theinvention contemplates a mixingmachine ofth rotary. drum ty e. in which the'several substances to be mixed charged; or fed to the mixing drum pr0 er in-the correct proportions are tho r oug ly intermixed and commingled.. in said drum in a plurality 'ofbatches' so that the gauged proportions are maintainedthroughout the mixing operation batches of mixed of the invention are to MIXING. mAcHrnEJ l 192s. Seria1 1f(o.638,5$3 substances or ingredients'being discharged as this is rotated.

jAcCOldfng to afurther aspect the iiiventionthe substances to be mixed are fed and convey it to the elevated endo'f 'an inv clined' mixing drum. ;-The hopper; is divided into [an appropriate number of 'vconipartments one forfeachiof the, several substances to be mixed and; meansare provided; for levellingth'e material in each brickfl as it;

mately predetermined quantity of material is extracted from thehopper by each bucket.

The buckets are so arranged. that the contents are introduced-much as by the aid of an appropriate chute or hopper into the mixing drum proper Whiclrconsistsio f a preferably. cylindrical shell or drum revolvably mounted about an inclined axis and having a plurality of compartments communicating" with each other each of said "compartments having one or more mixing blades or baflies' whereby the substances are lifted and turned I over as the drum rotatesandtransferred to the next following ,compartment by the com bined action of gravityand the aforesaid blades or bafiiesmeans: being. provided whereby the contentsjjof the "final compartment of the drum maybe discharged at each complete revolution of (the drum. The mixing drum'is revolvably mounted at such an inclination as to ensure that substances introduc'e d at one endwill travel by the com intermittently frorn'the mixing drum proper v to the mixing drum proper a combined emerges from the hopper so that an-approxi-j bined action of gravity and the aforesaid blades or baflies toward and be discharged fromthe opposite end of-the drum as this latter is rotated.

tions having a portion or portions cut away whereby material under treatment may pass from one compartment toxthe i'otheri .the

opening or openings in adjacent partitionspreferably being staggered relatively to eachother that is to say the opening in one partition is opposed diametrically to the openingin the adjacent partition. I The interiorof'each of the aforesaid compartments is provided "with a: liftin blade or blades preferably extending parallel with the axis of rotation" of the drum although they may be "arranged in angular directionrelatively thereto. A suitable framing is' p'rovi led adapted to support the aforesaid elevator. and the mixing. drum which latter 'may be mounted by means of t runnio'ns or by means ofa spindle passing through the drum andsuitable nechanism is provided for rotating Saiddrunrahd actuating the elevatorl' In orderitliat the ;l'11Ve11tl0I1- 111ay be clearly understood"reference will now be hadto the accompanying .drawings wherein a preferred embodiment of the inventionis il- 'lustr'ated by way I of example;

Fig; .lis an. elevation paratus,

' Fig.2 is a plan view thereof. V Fig. 3 isa sectionxonthe'line a.a, Fig. 1, drawn to a largescale.

' Fig. 4 is axsection through device. Fig. 5illustrates one of the drum sections. 7F-ig. 6 is anend viewthereof. e 7

Fig. 7 aside view of adivision'plate and Fig.6 is a front viewthereoflfl j e I Referring. to the drawings wherein the of one formof ap;

the elevating same reference letters indicate "the same or' similar-parts, brepresents a frame on which. the apparatus is mounted saidframe being supported on wheels 0. j, H

hiounted on the frame 7) near cne end thereof is at'runk or casing (Z within which are supported the guide rails-e serving to guidefan endless conveyor or elevatorjf to which the buckets g are attached; The elevatorisoperated by age-a1 it mounted on a spindle driven by a chainbeltor' the like j from, a spindleicthe latter being driven by a belt I or. othertransmission from an engine Z carried by the frame e The buckets ar earranged inseries or sets on the elevator f and each set: in the present embodiment: and as applied toaconcrete nnz er"comprlses three buckets m 12 and 0, Fig. gthe'bucket m bemg adapted to convey' ballas tfto the mixing drum,

bucket 72 cement, and the'bucket 0 Sandi A" hopper? is-suppoi-te'd' on the frame?) at the bottom of the elevator'trunk or casing the/frameb. .7 z '1 (5 and is provided with three compartments 9, g; r to which ballast, cement and sand are fed respectively; The hopper p is preferably capable of being easily detached from Tlie'buckets m, a, 0 when the elevator f is operated pass through the compartments in the hopper and become filled with the respective ingredients and in order to ren'iovethe superfluous material froinsaid buckets scrapers "s are provided'said scrapers beingicarried on armszfi"inountedon aspindle a carried'by the hopper p. The buckets when passing through the compartmentsin the casing come intocontact'withithescraping device which removesthe surplu's'fima terialf from the 'buckets.wherebytasg they emergefrcm the casing. they willea'chc011 tain a predetermined 'quantityfof' material which then discharged asthebuck'ets are elev'ated'g into a chute v and are fthus; ntro du'ced into the mixingdrum w The mixing" drum w e is revolvab'ly v mount ed on the frame b andfat' one end thereof is an annular gear which meshes. with .a

pinion mounted'on the'shaft .The drum is divided into a plurality 'of c'o'mpartme'nts by transverse partitionse and it willbe seen from Figure l that each partition has a portion' cut away whereby the material under treatment can pass from one compartment to the other. Theopenings'in. adjacent pan titions are opposed that is to say, the'io'pening in one partition is diametrically opposed to the openingin djacentpartition;

The interior of each compartment is fpr'ovided'with lifting blade at ig. 3 which extends parallel with the axis 1 of" the drum;

As shownin F ig.. 1the drum;is built up of a'number of sections each of which com prises acylindrical shell] having flanges whereby it may be bolted' or otherwisel'se cured'ito other similar-sections, oneflend of each section being provided with the afore:

mentioned partition while" the other end is 7 open, the interior of each sectiong-having mounted therein the lifting'blades a. so that by securing a number of such sections'toi getherl a gdrum containing any desired; n'umg b'er of chambers orjcompartments may be I constructed. 7 "Such a construction facilitates manufacturefland repairs and renewals of One endof theidrumhas adischargeopen ing 6 through whicl iithe concrete s'intei mittently discharged splash guard d is arranged at the" end ofthejdrum."

VVater is' introduced: in" predetermined he pa sl i h n q dru iljm y;r ad y be??? quantities through a funnel d "supported on the chutew. The water may, be sprayed on tothe materials or it maybe introdiiced into the chute o in any "other convenient manner.

drawbar e 'is provided to facilitate transport ofthef apparatus from .one place to another and if. desiredtlie.frameb may be supported on cater-pillar, tracks.

If it is "desiredto change the'proportions of'the various .ingredients this can easily. be; effect-ed by removing the buckets from the.

elevator and substituting buckets of such sizes as; to give-th proportions desired or the buckets'may be provided with movable partitions which can be adjusted as and when desired.

The compartments in the hopper may be provided with means such as name plates f for indicating the contents thereof.

In operating a mixing machine constructed in accordance with this invention the several substances to be mixed are fed into the separate compartments of the elevator hopper in bulk and after the machine has been started the operation is automatic in the sense that the elevator picks up a predetermined quantity of each of theingredients and introduces them at the elevated end of the mixing-drum where they are mixed in the first compartment thereof. As this drum is rotated the contents pass to the second compartment of the drum where they are-submitted to a further mixing and while this is occurring a fresh charge is introduced to the drum by the elevator. It will be seen that the materials are mixed in batches each complete batch travelling through the comwhereby the ingredients to be mixed are in-' troduced into the mixing drum may be dispensed with as it is feasible with small mixing machines to feed the ingredients to the drum by hand in the usual way.

I claim:

1. In a mixing machine a rotary mixing drum, comprising, a plurality of cylindrical sections detachably connected together, a partition located between each pair of adjoining sections, adjacent partitions having diametrically positioned apertures to permit section.

the material being mixed to pass from one section to the next at each complete rotation of the drum, and a mixing blade in each 2. A mixing machine comprising a mixing drum formed of a number of sections detachably secured together, a partition between the adjoining faces of each pair of sections whereby the drum is divided into a series of separate batch mixing compartments, said partitions each having an opening therein, the opening in one partltion being, in staggered relation to the; opening in each adjacent partition, an endless-conveyor, separate.batch-groups.of buckets thereon,

a hopper, separate batchconstituent- $0111 p artinents therein ree-g1; which the buckets are. arranged to pass, means for removing surplus material from thebuckets, a chute for directing tlie' contents offthe buckets in to the mixing drum, and drive means to 'ro- .tatethe drum and conveyor. 1

3. A mixingmachine comprising a mix-- ing drum formed of anumber of sections detachably secured together, a partition be tween the adjoiningfaces of each pair of sections whereby th'e vdrum is divided into a series of separatebatchmixing compartments,saidpartitions each having an opening therein, the opening in one part tion being in staggered relation to the open ng in each adjacent partition, an endless conveyor,

ments' therein through. which the buckets are arranged to pass, means for removing surplus material from the buckets, a chute for directing the contents of the buckets into the mixing drum, and drive means to rotate the drum and conveyor, the drive means rotating the drum one complete revolution while advancingthe conveyor a distanceof one group of buckets, the openings in the compartment partitions being diametrically spaced to permit transfer of material from one compartment to the next upon eachcomplete rotation 'of the drum. I

mixing machine comprising a mixi. A ing'drum formed of a number of. sections adapted to'be secured together, a partition between the adjoining faces of each'pair' of sections whereby the drum is divided into a series of compartments said partitions hav-' ing each "an opening therein theope-ning in one partition being diametrically opposed to the opening in each adjacent partition, an endless conveyor, buckets detachably secured -to said conveyor, a hopper, compartments therein through which the buckets are caused to pass, pivoted scrapers for removing surplus materialfrom said buckets and a chute for directing the material from the buckets into the mixing drum. I g

5. A mixing machine comprising a mixing drum, means for rotating said drum, partis5 7' separate batch-groups of buckets thereon, a a V hopper, separate batch constituent comparttions in said drum whereby thedrum is di- 1 vided into a series of compartments, said partitions having each an opening therein the opening. in one partition being in staggered relation to the opening in each adjacent partition an endless conveyor, buckets thereon, a hopper, compartments therein through which the buckets are caused to pass,pivoted scrapers for removing surplus material from said buckets, :and a chute for directing the contents of the buckets into the mixing drum. Y

6. A mixing machine comprising. 'a inixtachably secured tc'said conveyor, a hopper, 111g drum, meens for rotatlng' sznd drum, com mrtments thereln through which the: 10

partitions in said drum whereby the drum buckets are caused to pas sfpiizoted gcjrapers isdiyided-into a series of co n'lpartmcuts said for removing surplus materialfrom said partitio is having each an opening therein bucketsfl-nd a chute fOr dii'ecting-the mante the opening in one partition being diametril'i 9.1 from the. bucketsfinto the/mixing drum. cally pposed toiheopening in each adjacent e V partition an endless COI iVG'YOI', buckets de- I JOHN v31; 

